6787420 has 24 divisors (see below), whose sum is σ = 15092784. Its totient is φ = 2555136.

The previous prime is 6787399. The next prime is 6787439. The reversal of 6787420 is 247876.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9642 + ... + 10321.

It is an arithmetic number, because the mean of its divisors is an integer number (628866).

Almost surely, 2^6787420 is an apocalyptic number.

It is an amenable number.

6787420 is an abundant number, since it is smaller than the sum of its proper divisors (8305364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6787420 is a wasteful number, since it uses less digits than its factorization.

6787420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19989 (or 19987 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 6787420 is about 2605.2677405595. The cubic root of 6787420 is about 189.3367455688.

The spelling of 6787420 in words is "six million, seven hundred eighty-seven thousand, four hundred twenty".